Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d82554db14b2eec…

MALICIOUS

PDF

53.3 KB Created: 2020-08-24 21:48:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ade333f1c5d3099547d7f9178f6e6be9 SHA-1: 758f27bfcd2959914a6dd5329bdcfab9f7ef7f4d SHA-256: 2d82554db14b2eec477b7d3833820ef04abc525eec672a2e17497e60caa85bca
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm designed to appear as legitimate academic reports, but the primary link redirects to malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this redirection. The document body, though heavily obfuscated, contains the initial lure text and the malicious URL. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=iot+based+home+automation+system+project+report In PDF document text
    • http://files.lisawebbermusic.com/uploads/1/3/0/7/130776015/6721457.pdfIn PDF document text
    • http://tasozo.flowersindublin.com/uploads/1/3/1/4/131454215/xidujasawovab.pdfIn PDF document text
    • http://goxugi.pellegrini.store/uploads/1/3/1/3/131380594/dixavufisuvep-toxugupen.pdfIn PDF document text
    • http://files.cruisenvacationdeals.com/uploads/1/3/1/4/131453712/035a9312f.pdfIn PDF document text
    • http://files.michiganconcretepros.com/uploads/1/3/0/7/130775150/gidumamipamusat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6861/1998/files/algebra_2_transformations_quiz_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/jolly_phonics_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3802/3581/files/biology_textbook_gujarati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/75085903334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/99607499938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2860038855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6756/2392/files/bamu_bsc_biotechnology_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0997/3147/files/jujinopije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2953/files/falosifuwilipuzopado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/64892738564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5470/1463/files/kujoxar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/6987/4852/files/jarefepadipakudew.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F76 5536 bytes
SHA-256: 7eb01195c0982e2e5df6a739909d1e6bf215f237e29af46ec1721f859b90f993
font_01_sfnt_off0000a21a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA21A 11656 bytes
SHA-256: 370baa305f520ffa1e7d9505cc9e7da42e98bf94a3e28ef105fc1e729166030e

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